Report of the State Mineralogist . About 600 feet south of shafton this level, a winze has been sunk on incline to depth of 250 feet. Atdepth of 200 feet in this winze ore was cut off by fault slip, which dips45 degrees west. This ore body has recently been picked up about 50feet above this level. Ore reported to carry high silver and lead hoisted from winze by gas engine, then trammed to ore pocketin main shaft on tunnel level. Hoisted by gas engine. Orecarrying values of 8 to 10 ozs. silver and 15 to 20% lead shipped toAmerican Smelting and Refining Companys Smelte
Report of the State Mineralogist . About 600 feet south of shafton this level, a winze has been sunk on incline to depth of 250 feet. Atdepth of 200 feet in this winze ore was cut off by fault slip, which dips45 degrees west. This ore body has recently been picked up about 50feet above this level. Ore reported to carry high silver and lead hoisted from winze by gas engine, then trammed to ore pocketin main shaft on tunnel level. Hoisted by gas engine. Orecarrying values of 8 to 10 ozs. silver and 15 to 20% lead shipped toAmerican Smelting and Refining Companys Smelter at Murray, Utah. 292 MINES AND MINERAL RESOURCES. Second class ore, 4 to 5% lead and 4 to 6 ozs. silver goes to concentrationplant at Tecopa. Thirty-five men are employed at mine. Mill capacity 100 tons per day. Treating 60 tons. Flow sheet, 200-ton Blake crusher driven by gas engine. Orefrom crusher conveyed by belt conveyor to mill bins. From bins orepasses over Colorado impact screen and screened to 8 mesh. Oversize. m ; Photo No. 33. Noonday Mine, Tecopa Consolidated Mining Company, Tecopa, California. goes to 4x6 Ball mill, while through size (8 mesh) goes to mainlaunder. Oversize reground in ball mill to pass through 8-mesh screen,then to 3. Richards hydraulic classifiers, where classified so thatapproximately 40 tons of 8 to 12 mesh material treated by Bert-charttable, and material from 20 mesh to slimes by 6 Wilfley tables. Over-flow from classifiers to 8-foot callow cone. Spigot product from cone toNo. 6 Wilfley table, overflow from cone used as wash water. Mill mak-ing a recovery of 85%.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectminesandmineralresou
